package main

import (
	"fmt"
)

/*func add(x int, y int) int {
	return x + y
}

func minus(x, y int) int {
	return x - y
}

func pi() {
	fmt.Println(math.Pi)
}*/

func swap(x, y string) (string, string) {
	return y, x
}

func main() {
	//fmt.Println(add(2, 3))
	//fmt.Println(minus(5,2))
	//pi()
	a, b := swap("hello", "world")
	fmt.Println(a, b)
}
